By leak, I meant that it ran down from
Where it began. Dripped down from its original place. Leaked. I didn’t know we were playing a game of semantics here. It does not simply wipe away carefully. I’ve scrubbed the parts I can reach and it does not come off easily, hence needing to take it apart to be able to clean it properly. You were incorrect in saying it did not leak. It leaked from bottom of the amplifier.
No need to get uptight. I came on here because I saw a video on youtube of Nelson Pass being interviewed and he mentioned this site. I thought it would be a good resource. I did not come on here to debate or argue with unpleasant people.
I’ve already discharged the amp. I don’t see the issue with testing parts. I don’t have the resources to purchase amps for testing. This is what I have. I did not say that I just decided to take it apart out of the blue. The rear is now covered in this white paste and crud, and I have to go in there to clean it anyway, so I thought I may as well test things in the process, since they’re all original parts.
No idea why everyone here is so discouraging.
Really not what I expected from this community.
They are "discouraging" because you CAN KILL YOURSELF in there.
It doesn't happen often but the odds ARE NOT ZERO. You are
unfamiiar with electronics and will certainly miss something that is
IMPORTANT to proper functioning and be totally unaware. What's worse
is you don't know WHY it's important - yet. You can learn a lot here but
don't epect to run a marathon next week. MOST of us can't run far but
perhaps you've trained for it. If so, then you know.
G²
I’m already inside the amp. I read all about the risks and safety precautions long before coming onto this site.
It makes no sense to spend all this time telling someone not to do something instead of sharing useful information.
You just wrote all of that out and shared nothing related to the amplifier.
I don’t have time to argue.
Extremely disappointing as I have four pieces of gear which need repair right now. But no problem. you win. I’ll learn on my own.
You can get the service manual from https://www.hifiengine.com for
free. You just need to register. When you get the heatsinks exposed
to remove the transistors you might break a wire or more from flexing
them too much. Do you have a good soldering iron and other tools to
reconnect them?
If you need step-by-step instructions, the service manual will not be
sufficient but at least you can get an idea.
G²
I can admire people wanting to mess with things, and some do worry about things that aren't justified.
But if you cannot understand the fundamental of electronics servicing, and succumb to the internet's massive and often-times misinformation (like that annoying and often unjustified "recapping" craze), then it's best to leave well enough alone.
I'd hate to see something of value become damaged for no good reason.
Indeed, the Service Manuals are primarily written for "Experienced" technicians like me.
To the common "putzer" or backyard mechanic types it is garbled alien talk.
Rule 1: I'm a certified 45+ year professional audio/video service technician so I'm always right.
Rule 2: In case I was wrong, rule 1 applies.
Yes. I have found this to be a most unhelpful, unwelcoming place. I was really looking forward to it, especially owning several pieces designed by Nelson Pass. Alas, it seems to be grouchy old men who think that behaving rudely is acceptable because they may know more in a given field.
I just purchased a couple of books on audio repair. Just going to do the repairs myself. If there were a way to cancel my membership here, I would. What a letdown.
Not a big deal, though. The whole world is pretty uptight and crazy these days. Why would audio be any different?
Just looking forward to my projects and educating myself on the subject.
@Brandosees
Step back, ignore the personal back and forth and concentrate on the facts. The thermal paste cleans pretty well with a cloth wetted with rubbing alcohol. Clean the exterior extremely well and wipe up the largest part inside and it is ready to roll. I can speak from experience, that I decided to recap a Proton D1200 amplifier. I made mistakes and when trying to adjust the bias shorted something out and it shot a blue arc across the board and totally fried one channel to the point of no return. Can't stress enough, these big amps are temperamental and dangerous. Wiseoldtech can be grouchy, but I have found his advice to be VERY helpful.
I wondering when you smelled something hot the other day where you playing at very loud levels? It kind of looks like it got hot and the paste flowed.
Step back, ignore the personal back and forth and concentrate on the facts. The thermal paste cleans pretty well with a cloth wetted with rubbing alcohol. Clean the exterior extremely well and wipe up the largest part inside and it is ready to roll. I can speak from experience, that I decided to recap a Proton D1200 amplifier. I made mistakes and when trying to adjust the bias shorted something out and it shot a blue arc across the board and totally fried one channel to the point of no return. Can't stress enough, these big amps are temperamental and dangerous. Wiseoldtech can be grouchy, but I have found his advice to be VERY helpful.
I wondering when you smelled something hot the other day where you playing at very loud levels? It kind of looks like it got hot and the paste flowed.
And yet, I've got decades of (professional) experience and get stubborn replies.
Like amateurs know better than me?
Thermal paste that isn't of good quality, or cheap, would drip.
I suspect that whoever owned that amp before used sub-standard paste, and it clearly shows a sloppy mess.
I've never had that issue - and I've overhauled Adcom 555's in the shop plenty of times.
Yes, I can be grumpy at times, but being ignored or refusing my suggestions by being stubborn can bring on things like that.
Hell, if people, the inexperienced crowd, want to ignore me, fine, blow the thing up, it's not my damned loss.
My tolerance level is narrow these days.
Im not getting into another fruitless debate here.
I did not blow anything up. Telling someone to avoid something instead of answering as to their inquiry is not technical advice. It is someone suggesting that the other person not work on the project.
I asked for anyone’s help and even began a new thread which no one replied to.
I have already taken much of the amplifier apart and will be putting it all back together.
No need to pretend that this is rocket science here.
I’m sure I am not the only educated individual here who has simply never studied electronics.
It is not your tolerance level.
It is your scope which is narrow.
As I’ve said on here, I purchased some nice books. Doing the work on my own.
Didn’t come on here for you anyway, so if you’ve nothing positive to contribute, why return to chime in at all?
you’ve already made your vast knowledge abundantly clear
thermal paste does not leak.
you’re a 45 year vet so what you say goes(at least in your mind).
Those who don’t adhere to your instructions will blow things up.
Oh, and you’re experienced. And people who are beginners are putzers, as you put it.
I’m not going to have a ******* contest with an angry old malcontent.
you are presumptuous, petty and small.
I’ve lost respect for Nelson Pass for not jumping in here and keeping this peaceful. Thought this was going to be a place of peaceful learning and SHARING.
Thankfully, I could not care less about this forum as I do not live my life online.
I’ve already got it apart. Im not one to leave things “good enough.” I take care of my things and want to clean it out properly. The burning smell was something I was hoping to discuss, but this is clearly not the place for me.
It was only warm when that smell began.
It was happening when I was running in bridged mode. But the amp never became more than just a bit warm to the touch. Never hot.
I appreciate your input. But just because some people make mistakes, does not mean all people will make mistakes. Frankly, I didn’t need to come on here to get general answers. I came on here because I incorrectly thought that I’d find experts on this particular amp and have an opportunity to test and troubleshoot things with some folks who know its quirks and what to look out for.
I won’t be posting again.
I am not a fan of negativity or arguing.
It is a Waste of life.
In the third photo, the fuse is incorrectly seated in the fuse-holder on one end. The fuse jammed in like that can wreck the "springiness" of a fuse-holder. Just saying...
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Rick...
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Rick...
I better put that on 🙂I think if you browse the forums you will actually see the opposite is true. Many many threads and members go above and beyond to help/advise and sort technical issues out.
+1 Good advice.
You have to accept that you can't force views and opinions in lots of cases. That is something I learned long ago on here.
Advise, point things out, reinforce a point if needed but beyond that you just have to accept the course a thread goes in. My advice is to withdraw gracefully and not get drawn in. Keep it technical.
And that is the point to stand back from the discussion 🙂
We see countless examples of well meaning beginners working on various items and it not ending well. Usually recaps and attempting to set operating points (quiescent current adjustement for example).
Some of the guys in this thread (myself included) have a lifetime of experience in a professional setting. You know what works, you know what doesn't work and you have both the theory to back that up and also that indefinable second sense that comes from years of experience. It is a real skill, just like a top surgeon or consultant possesses.
Nelson is held in the very highest regard by the vast majority on here and has done more than most to further the diy cause. Nelson posts on diyAudio as a normal member, not a moderator.
Well spotted. It might even have been like that from new... stranger things have happened. The fuse holder may well be damaged at that end as you say.
All that, and it's of course the lack of understanding because of the internet.
You have to accept that you can't force views and opinions in lots of cases. That is something I learned long ago on here.
Advise, point things out, reinforce a point if needed but beyond that you just have to accept the course a thread goes in. My advice is to withdraw gracefully and not get drawn in. Keep it technical.
And that is the point to stand back from the discussion 🙂
We see countless examples of well meaning beginners working on various items and it not ending well. Usually recaps and attempting to set operating points (quiescent current adjustement for example).
Some of the guys in this thread (myself included) have a lifetime of experience in a professional setting. You know what works, you know what doesn't work and you have both the theory to back that up and also that indefinable second sense that comes from years of experience. It is a real skill, just like a top surgeon or consultant possesses.
Nelson is held in the very highest regard by the vast majority on here and has done more than most to further the diy cause. Nelson posts on diyAudio as a normal member, not a moderator.
It's not like "being there".
I've had customers come into the shop, some stubborn, but explaining things in person usually gets the message across.
As for Nelson Pass, I agree that it's not fair to chastize the guy, it's obvious that Branodsees guy has an attitude problem - charging in here for a couple of days and then expecting "prompt service" from Nelson.
I've had customers like that - expecting me to drop everything, and bow to their wishes.
Instead I show them the front door.
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